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Exacq Unit Crashes When Backup is Imported

Description 

When importing a backup file to a NVR the system crashes the machine rendering it inaccessible. After a re-installation the import of the backup file once again crashes the system.
 

Product 

  • exacqVision Server

Steps to Reproduce 

  • Import backup file to the Exacq Server.

Expected Results 

  • Settings are imported and exacqVision Server continues normal operation 

Actual Results 

  • exacqVision Server service crashes and is not accessible

Solution

If the settings import correctly on a different system then check the disk(s) for corruption.

Linux #1702 – Manually Checking a Drive for Errors in Linux

Windows #10198 – Running Windows Chkdsk Command

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Knowledge Support Support Categories exacqVision Hardware

Running Windows Chkdsk Command

Title

Running Windows Chkdsk Command

Description 

Chkdsk, also known as Microsoft Check Disk, is a utility that can be used in almost all Windows versions. The Chkdsk commands used to scan through entire hard drives to find and fix any errors.

Chkdsk should be run whenever file system corruption is suspected whether by odd behavior or when indicated in the  exacqVision Server or Windows System logs.

Product 

  • Microsoft Windows

Syntax

Chkdsk volume /f /r /x

Recommended Parameters

  • /f Fixes errors on the disk. The disk must be locked. If Chkdsk cannot lock the drive, a message appears that asks you if you want to check the drive the next time you restart the computer.
  • /r Locates bad sectors and recovers readable information. The disk must be locked. It includes the functionality of /f, with the additional analysis of physical disk errors.
  • /x Forces the volume to dismount first, if necessary. All open handles to the drive are invalidated. It also includes the functionality of /f.

Run Chkdsk from Command Prompt

  • Click the Window Key, type cmd in the search box.
  • Right-click on cmd, cmd.exe or command prompt, depending on your version of Windows and select “Run as Administrator”. Enter your Administrator password if prompted.
  • When the Command Prompt opens, type the following command replacing “c” with the drive letter of the volume to be checked and press enter.
  • Chkdsk c /f /r /x
    • Note: If one or more of the files on the hard disk are open, you will receive the following message:”Chkdsk cannot run because the volume is in use by another process. Would you like to schedule this volume to be checked the next time the system restarts? (Y/N)”
      Type Y, and then press ENTER to schedule the disk check, and then restart your computer to start the disk check.

    Run Chkdsk from Properties Window

    • Press Windows key + E to open File Explorer 
    • Navigate to the HDD/SSD to scan 
    • Choose Properties 
    • Select the Tools Tab the click the “Check Now” or “Check” button under Error-checking
    • Windows 7
      • You will be prompted about actions to take before the scan is run 
      • Automatically fix file system error 
      • Scan for and attempt recovery of bad sectors
      • Note: If the drive is in use a message will prompt you to schedule disk check, select to do so. 
      • Reboot the machine 
    • Window 10 
      • Scan Drive 
      • If errors are found, you can decide to fix them
      • Select to scan the disk, a progress window will appear with approximate time to completion 
      • When scanning finishes
      • A message will display with the results and a Show Details link to see the Chkdsk log in Event Viewer.

    Categories
    Knowledge Support Support exacqVision Server exacqVision Hardware

    exacqVision Input/Output, Media, or Write Errors

    Description 

    Meaning of Input/Output Errors, Media Errors, or Write Errors seen in Storage or exacqVision logs.

    Product 

    exacqVision Server

    Information

    These messages are normally due to a corrupted filesystem or bad blocks on the disk(s).

    Solution

    Run ‘chkdsk’ or ‘fsck’.

    If problem returns, replace the drive.

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    Categories
    Knowledge Support Support exacqVision Server exacqVision Hardware

    exacqVision Bad Superblock Message

    Description 

    Meaning Bad Superblock message in logs

    Product 

    exacqVision Server

    Information

    A superblock is a block of data written at the beginning of a partition that contains metadata about the filesystem. If this block becomes corrupted, a ‘Bad Superblock’ message results. 

    Solution

    There are several backups of this data throughout the hard drive and it can be restored. 

    Run ‘chkdsk’ or ‘fsck’ using an alternate superblock.

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    Categories
    Knowledge Support Support exacqVision Server exacqVision Hardware

    ExacqVision CRC Errors

    Title

    ExacqVision CRC Errors

    Description 

    Meaning of CRC Errors noted from ExacqVision

    Product 

    ExacqVision Server

    Information

    When data is transmitted from one place to another, checksum value is created to ensure the data has not been altered during the process of being sent. If a discrepancy exists, a CRC Error results.

    This could result from bad cabling, network interference, registry issues, network storage disconnection, etc. 


    Solution

    Often resolved by fixing the connection problem, then running ‘chkdsk’ or ‘fsck’. 

    The drive is probably fine.